Home / 3,021.77-4,171.48-2,015.15

Finding the Fourth Proportional to 3,021.77, 4,171.48 and 2,015.15

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Solution

The fourth proportional to 3,021.77, 4,171.48 and 2,015.15 is: 2,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.77 : 4,171.48 = 2,015.15 : x
  2. Step 2: Convert to fraction form
    3,021.77/4,171.48 = 2,015.15/x
  3. Step 3: Cross multiply
    3,021.77x = 4,171.48 × 2,015.15
  4. Step 4: Simplify right side
    3,021.77x = 8,406,143.36
  5. Step 5: Solve for x
    x = 8,406,143.36/3,021.77
  6. Step 6: Final answer
    x = 2,781.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.